I buy, sell and trade often... So I've sold or traded many many guns. (I'm not wealthy enough to keep all the guns I've purchased and I like to sell and trade so I can experience owning / shooting many brands and models.)

What gun have you gotten rid of... That you now wish you would have kept? (No fair saying 'all of them')

Here's mine

- a mint 1914 Mauser chambered in 7.65browning

I didn't even keep a picture of it